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Microsoft MB-500 Exam - Topic 1 Question 21 Discussion

You are Dynamics 36S Finance developer.You need to explain the performance advantages of the different concurrency models.What are three performance advantages of optimistic concurrency control over pessimistic concurrency control? Each correct answer presents a complete solution.NOTE: Each correct selection is worth one point.
C) Records are locked for a shorter length of time. and D) Fewer resources are used to lock records during updates. and E) Records remain available for other processes while they are selected from the database.
A) One record cannot be selected for update by two different processes at the same time.
B) Records are locked as soon as they are retrieved from the database.

Microsoft MB-500 Exam - Topic 1 Question 21 Discussion

Actual exam question for Microsoft's MB-500 exam
Question #: 21
Topic #: 1
[All MB-500 Questions]

You are Dynamics 36S Finance developer.

You need to explain the performance advantages of the different concurrency models.

What are three performance advantages of optimistic concurrency control over pessimistic concurrency control? Each correct answer presents a complete solution.

NOTE: Each correct selection is worth one point.

Show Suggested Answer Hide Answer
Suggested Answer: C, D, E

Optimistic Concurrency only locks records from the time when the actual update is performed.

Following are the advantages of using OCC:

Records remain available for other processes to update if they have been selected from the database but haven't yet been updated.

Records are locked for a shorter length of time.

Fewer resources are used to hold the locks during the update process.


https://docs.microsoft.com/en-us/dynamicsax-2012/developer/optimistic-concurrency-control

by Shenika at May 05, 2022, 03:39 AM

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Filiberto
10 months ago
Wait, so records are still available while being selected? That’s surprising!
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Shalon
10 months ago
Fewer resources used is a big win for performance!
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Alesia
11 months ago
I’m not sure about that, locking seems safer to me.
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Henriette
11 months ago
Totally agree, it’s way more efficient!
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Renea
11 months ago
Optimistic concurrency lets multiple processes access records simultaneously.
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Elizabeth
11 months ago
I recall that fewer resources are used during updates with optimistic concurrency. That was highlighted in one of our study sessions.
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Orville
11 months ago
I'm not entirely sure, but I feel like locking records for a shorter time is also a benefit of optimistic concurrency. It seems to make sense, right?
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Micah
11 months ago
I think optimistic concurrency control allows records to remain available for other processes, which is a big advantage. I remember that from our practice questions.
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Lavonda
11 months ago
I’m confused about the locking part. I thought that pessimistic concurrency locks records immediately, but I’m not sure how that compares to optimistic concurrency.
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Moon
11 months ago
This question seems to be asking about the differences between flex-algo LSPs and SR-TE LSPs. I'll need to carefully review the options and think about the key advantages of each approach.
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Elena
11 months ago
Hmm, I'm a bit confused about the relationship between the MAC loopback and the PHY loopback. I'll need to review my notes on fault location techniques to make sure I understand this properly.
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